It contained very little hydrogen and helium.
它含有非常少的氢和氦。
But it is far more than a bland ball of hydrogen and helium.
但它绝不仅仅是一个由氢和氦组成的平淡星球。
The release of hydrogen and helium from coal universally exists.
煤中普遍存在着氢气氦气的释放。
So, it has an atmosphere of light-weight elements: hydrogen and helium.
因此，它的大气层由重量很轻的元素：氢和氦构成。
Like other stars, the sun is a big ball of gases — mostly hydrogen and helium atoms.
与其他恒星一样，太阳也是一个巨大的“气球”——大部分主要为氢原子和氦原子。
Oxygen is the third most abundant element in the cosmos, after hydrogen and helium.
氧是宇宙中第三丰富的元素，仅次于氢和氦。
Like its bigger neighbor Jupiter, Saturn is a gas planet made mostly of hydrogen and helium.
就像比它更大的邻居-木星一样，土星也是气体行星，主要由氢和氦所组成。
Having said that, we suspect that this new planet is made mostly of hydrogen and helium gas.
这样说来，我们猜测这可新发现的行星主要由氢气和氦气组成。
When the universe emerged from the Big Bang, it consisted almost entirely of hydrogen and helium.
当宇宙最初从大爆炸中诞生时，整个世界基本上就是由氢和氦组成的。
Some of this energy congealed into particles, which assembled into light atoms like hydrogen and helium.
有些能量凝结成了粒子，这些粒子组合形成了轻原子如氢和氦。
Metallicity is a measure of the relative abundance in a star of elements other than hydrogen and helium.
金属丰度是对恒星内除氢和氦之外元素的相对丰度的度量(天文学中比氦重的元素都叫金属。——译者注)。
Nearly all their mass is made up of hydrogen and helium, giving them compositions like that of the sun.
它们的几乎全部质量都由氢和氦贡献，这使得它们的组成成分与太阳类似。
Larger worlds are gassy, with their solid surfaces buried beneath deep blankets of hydrogen and helium.
大一点的是气体行星，它们的硬质表面深埋在氢氦层低。
Venus Express has detected oxygen, hydrogen and helium ions-remnants of early oceans-escaping into space.
金星快车已经发现了逃逸到太空的氧，氢和氦离子，他们是早期海洋的残留物。
The solar wind was much weaker in the outer regions, however, resulting in gas giants made up mostly of hydrogen and helium.
然而在外部区域，太阳风变得十分温和，使得由氢和氦构成气态巨行星得以存在。
The finding also challenges theories of planet formation, which hold that stars need more than hydrogen and helium to produce planets.
这个发现同时也是对行星形成理论的一次挑战，该理论认为恒星需要更多的氢和氦才能形成行星。
The solar wind is a high-speed but extremely tenuous stream of electrically charged gases—ionized hydrogen and helium—that flow outward from the sun.
太阳风是一种高速但非常稀薄的从太阳向外流动的带电气体离子氢、氦流。
HIP 13044b's existence is bit of a mystery too, since it is the first planet of any origin found around a star lacking resources beyond hydrogen and helium.
HIP 13044b的存在还是有点令人费解的。因为它是第一颗被发现起源于恒星周围却除了氢和氦之外缺乏其他金属的行星。
It is mostly made of ionized hydrogen and helium, though carbon, oxygen, nitrogen and other atoms are present, producing the complex color blend visible here.
它主要由电离氢分子和氦构成，同时还包括碳、氧、氮和其他原子，使得其呈现纷繁的混合色彩。
Blues and purples are created by lighter gases such as hydrogen and helium, while low-level nitrogen can add red fringes to the bottoms of green auroral curtains.
蓝色和紫色是来自较轻的气体比如氢和氦，而更低点的氮气能在绿色极光的底部添上红色的边缘。
The atmosphere is largely composed of hydrogen and helium, plus small amounts of methane (which is responsible for the blue hue because it absorbs red light).
这里的气氛主要是由氢和氦，以及少量的甲烷(这是为蓝色色调，因为它吸收红光负责)。
Konstantin Batygin and Mike Brown, two CalTech scientists, say the new planet is about 10 times the mass of Earth and has an atmosphere of hydrogen and helium.
两名来自加利福尼亚理工学院的科学家康斯坦丁·巴特金和迈克·布朗，称新行星的质量大约是地球的十倍，其大气中有含有氢和氦。
The existing amounts of hydrogen and helium match theory perfectly - so well, in fact, that cosmologists claim this is the best evidence we have for the big bang .
氢和氮所存在的总量与理论计算匹配得很理想——实际上，它好得让宇宙论的学者声称这就是宇宙起源于大爆炸的最好证据。
Dr Marcy suspects that his new discovery, which has about 45 times the mass of the Earth, is composed of a rocky core surrounded by a thick envelope of hydrogen and helium gas.
马西博士怀疑，他的这个拥有地球质量四十五倍的新发现星体有一个岩层核心构成，并被一层很厚实的氢气与氦气层笼罩。
The space environment, combined with mechanical and cryogenic refrigeration systems using hydrogen and helium, chill the coldest instruments to 0.1 kelvin in four sequential steps.
利用太空的环境，以及机械和氢和氦的冷冻系统，分4个步骤把这个最冷的仪器冷却到只有0.1开尔文。
The solar wind from the sun was so powerful that it swept away most of the lighter elements, such as hydrogen and helium, from the innermost planets, leaving behind mostly small, rocky worlds.
来自太阳的太阳风以其强大的力量吹走了内行星上的氢和氦一类的轻元素，只留下了更小的石质星球。
The Jovian planets have very thick atmospheres consisting of varying amounts of hydrogen, helium, methane, and ammonia.
木星的行星有非常厚的大气层，且由不同数量的氢、氦、甲烷和氨等元素组成。
The Jovian planets have very thick atmospheres consisting of varying amounts of hydrogen, helium, methane, and ammonia.
木星的行星有非常厚的大气层，且由不同数量的氢、氦、甲烷和氨等元素组成。
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